text: There is much misinformation here!\nCurrently there is no way to use voice and/or cam from YM across to MSN.\nThough within the next month or two these 2 programs WILL become "interoperable", so you WILL be able to at least text chat from one to the other - but remains to be seen if this will also allow voice and/or cam.  (see Source, below).\n\nYes, now, if you have YM and a friend has MSN you CAN get one of the "multi IM" programs, like Trillian, QNext, Gaim, etc - which will let you communicate (but again, TEXT ONLY) with people on 4 major networks.\nBut, you'd still need to sign up with MSN first, even if you choose not to use MSN Messenger.